Freedom251 › Community Platforms
Stack Exchange
What Stack Exchange is
Stack Exchange is a network of community-driven sites where people share factual, experience-based knowledge across many interests and specialist topics. Members ask and answer questions, and voting helps surface useful contributions. Participation earns reputation that unlocks additional privileges, and members can collect bronze, silver, and gold badges. Each community has a Meta space for discussing how the site operates and raising issues. Stack Exchange chat provides rooms for real-time conversation and help with asking questions. The public Community Q&A network is free, with private spaces and moderation tools also available. It runs on the web and offers an API for programmatic access, including documented authentication and write support. API pages are capped at 100 items, while anonymous access is limited to page 25. Applications using API content must visibly identify Stack Exchange Network as the source. Public user-submitted content is licensed under Creative Commons BY-SA 4.0 and can be copied and redistributed with attribution. Stack Exchange, Inc. was founded in 2008 and is headquartered in New York, NY.
Who it suits
Stack Exchange suits people with an interest in one or more niches who want to share knowledge and learn. It is also relevant to developers using its API, subject to its access and attribution requirements.
What it does well
- Community questions and answers cover many topics.
- Voting helps surface useful contributions.
- Reputation unlocks additional privileges.
- Each community has a Meta space and chat rooms.
- Public network access is free.
What to know first
- No mobile apps are listed.
- API pages are capped at 100 items.
- Anonymous API access is limited to page 25.
- API applications must visibly identify the network as source.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Public Stack Exchange network | Community Q&A sites · participation subject to public network terms | Free |
As stackexchange.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
Stack Exchange offers topic-focused communities with questions, answers, voting, chat, and community governance. API users should account for its page limits and visible attribution requirement.
Facts from Stack Exchange's own pages
- API
- The Stack Exchange API supports programmatic access to the network and documents authentication and write support. · api.stackexchange.com, 12 Oct 2026
- API attribution
- Applications using the API must visibly identify the Stack Exchange Network as the source of API content. · opendata.stackexchange.com, 12 Oct 2026
- API limits
- The API documentation says pages are capped at 100 items and anonymous access is limited to page 25. · api.stackexchange.com, 12 Oct 2026
- Badges
- Users can earn bronze, silver, and gold badges for participation. · stackexchange.com, 12 Oct 2026
- Chat
- Stack Exchange chat offers rooms for real-time conversation and help with asking questions. · stackexchange.com, 12 Oct 2026
- Community governance
- Each site has a Meta space where its community can discuss how the site works and raise issues. · stackexchange.com, 12 Oct 2026
- Company
- Stack Exchange, Inc. was founded in 2008 and is headquartered in New York, NY. · stackoverflow.co, 12 Oct 2026
- Founded
- 2008 · stackexchange.com, 28 Sept 2026
- Free plan
- Yes · stackexchange.com, 21 Sept 2026
- Headquarters
- New York, NY, United States · stackexchange.com, 28 Sept 2026
- How answers work
- Users ask and answer questions, and voting helps surface useful questions and answers. · stackexchange.com, 12 Oct 2026
- Intended users
- The tour describes the sites as intended for people with a passion for a niche or many niches who want to share knowledge and learn. · stackexchange.com, 12 Oct 2026
- Mobile apps
- none · stackexchange.com, 21 Sept 2026
- Moderation tools
- Yes · stackexchange.com, 21 Sept 2026
- Privacy
- Stack Exchange's privacy policy says it does not sell personal information and describes how it collects, uses, and retains personal data. · security.stackexchange.com, 12 Oct 2026
- Private spaces
- Yes · stackexchange.com, 21 Sept 2026
- Public content
- The public network terms say user-submitted content is licensed under Creative Commons BY-SA 4.0 and is available for public copying and redistribution with attribution. · engineering.stackexchange.com, 12 Oct 2026
- Reputation
- Users earn reputation through contributions, and reputation unlocks additional privileges. · stackexchange.com, 12 Oct 2026
- Topics
- The network includes communities for a wide range of interests and niches. · stackexchange.com, 12 Oct 2026
- What it is
- Stack Exchange is a network of community-driven sites for sharing factual, experience-based knowledge. · stackexchange.com, 12 Oct 2026
Where Stack Exchange stands on Freedom251
- Community Platforms#34 of 126